Pulp-strainer.



11o.. 721,390. EATENTBD 'l1-111B. 24, 1903.

P. RBINICKB. l PULP STRAER.

` APPLICATION FILED JAH. 9, 1962. 110301121.. f z 511215134112111 1.

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No; :121,390 VPATENTBD PEB. 24, 1903.

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PULP STRAINER.

v .MPLIUMION FILED JAN. 9, 1902. No MODEL. Y z SHEETS-SHEET z.

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ilivrrnn PAUL REINCKE, OF

SPECIFIOATEON forming part of Letters atent Kilo. 721,390, dated February 24, i905.

Application filer] January 9, 1902, Serial No. 89,039. '(No model.)

T @ZZ whom it mftygconccrn:

A Be it known `that I, PAUL Rnnuonn, manufacturer, a subject of the Duke of Anhalt, re- 'siding at No. 19 Baasdorferstrasse, Kthen, lin the Duchy of Anhalt, in the `German Empire, have invented certain new and useful Improvements in Pulp-Strainers, of which the l following is a specification.

Pulp-strainers with beatingwings for mov lo ing the pulpl through the screen-plates are possessed by the drawback that the uniform distribution of the filling and iibrous stul in the liquid pulp is disturbed. l The speed of the i motion decreases in the direction from the ex- I 5 terior edges of the Wings to the axles of the same and every stroke or' movement of the wings directed against the pulp causes an .in-- terruption in the movement of the latter and a partial increase in bulli, which it is true is zo done away with by the next oscillation, but

brings about in connection with the aforementioned peculiar action of the oscillations of the wings an accumulation of tbe particles of the mass between the win gs and the screenplates, principally around the axle of the Wings, whereby the uniform distribution of the iilling and fibrous substances in the liquid pulp which is important 'for the goed quality of the 'paper to be manufactured is greatly im- 3o paired.

The object of the present invention is to overcome the 'aforementioned draw-backs by means of arrangements adaptedl to cause an intense movement and/mixing of 'the pulp as 3 5 a whole and particularly at those places where the particles tend to settle.

To attain'this object', I make use of the following arrangements: First, beatiugpieees, (arms, led ges,plates,wings,and the like) which 44o are arranged in the neighborhood of the axle of the wings and aremoved iu such a mannerA that they tend to bring about currents in the liquid pulp directed parallel to the surface of the beatingpieces; second, thev arrangement 45 of funneLshaped apertures and interstices in l the beating-pieces which are directed with Itheir narrow mouths against the screenplates whereby cn the wings moving backward powerful currents of pulp are driven 5o into the space between the screen-plates and the winglplates; third, the arrangement of several systems of beating-wings side by side in one pulp-strainer vat in such a manner that theinterruptions of the movement of the pulp caused by the oscillations of one system are compensated by thesimultaneous oscillations of. the neighboring system and that, further, the settling places of the fibrous substances are constantly washed. Y

ln order to make my invention more clear, I refer to the accompanying drawings, in which similar letters denote similar parts throughout the several views, and in which- Figure l is a diagrammatical cross-section through a pair oi' beating-wings intended for use in a plain pulp-strainer. Fig'. 2 is a similar section showing a pair of wings for use in a rotary strainer. Fig. 3 is a section similar to Fig. l, there being, besides the horizontal wings, vertical beating-pieces, too. Fig. fl is. an enlarged detail view of a part of a hori-A zcntal wing. Fig. 5 isa plan of Fig..4. Fig. 6 is a vertical section through a plain strainer having two setsof wings side by sidegand Fig. '2' is a plan of such a strainer, a part of the screen-plate being removed. Referring to Fig. l, a indicates the screen- `ate, below which oscillate the beating-wings b, which are secured to the axle c. This aXle carries also the beating-pieces Zand e, which oscillare in the same manner and cause a movement'of the liquid pulp parallel to' the wings ZJ h, whereby the accumulation of particles of the stuc between the screen-plate the wings and around the' axle is prevented. n The beatirigpieces cl e may, as shown in Fig. 3, swing around axles'a: y of their own, said axles having their bearings or'fulcrulns in arms r, fixed to the axle c. Thel extreme positions of this system of wings are indicated by l' and ll.'

Figs. el and 5 show a beating-wing Z), provided with funnel-shaped apertures o. These apertures are bordered `by oblique surfaces, which converge toward the screen-plate a. On the wings b moving backward the liquid pulp is forced into these apertures and is driven in powerful currents into the space above the wings. By meansof plates situloo side by side in one pulp-streiner vat and bein witness Wnereo 1 have hereanto sei: my

ing'driven in such e manner that the interhand in presence of mvo Witnesses. Y l ruptionsof movement of the stuff brought I EAU-L RFDWCFE about by the-oscillations of one system are 5 compensated by the simultaneos oscillations Witnesses: of the neighboring system or systems, for the Y RUDGLPH FMCKE. purpose as described. B. H. -WARNER, Jr. 

